70970261 has 2 divisors, whose sum is σ = 70970262. Its totient is φ = 70970260.

The previous prime is 70970243. The next prime is 70970269. The reversal of 70970261 is 16207907.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 66994225 + 3976036 = 8185^2 + 1994^2 .

It is an emirp because it is prime and its reverse (16207907) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 70970261 - 2²² = 66775957 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (70970269) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35485130 + 35485131.

It is an arithmetic number, because the mean of its divisors is an integer number (35485131).

Almost surely, 2^70970261 is an apocalyptic number.

It is an amenable number.

70970261 is a deficient number, since it is larger than the sum of its proper divisors (1).

70970261 is an equidigital number, since it uses as much as digits as its factorization.

70970261 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5292, while the sum is 32.

The square root of 70970261 is about 8424.3849033624. The cubic root of 70970261 is about 414.0239528877.

The spelling of 70970261 in words is "seventy million, nine hundred seventy thousand, two hundred sixty-one".